HOLY COW PEOPLE.
Here's Keira Knightley at a BMI of 17:
Yes, I was that skinny! That is the minimalist butt and ribcage my dear husband fell in love with. How, I do not know, because he greatly favors the looks of this lady here:
The lovely Shakira, who at five-two and 127 pounds (157 cm, 57.6 kg) has a BMI of 23.2. I guess he just kept encouraging me to have babies until I got curvy enough. I've got a few more BMI points to eke out - I guess those are for the next babies. After all, the hips don't lie.